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Subject :NSO    Class : Class 7

Three salt solutions are given as:
X : Potassium sulphate solution
Y : Sodium carbonate solution
Z : Ammonium sulphate solution
Which of the following statements is incorrect regarding these salt solutions?

AX will have same effect on red litmus paper as the common salt solution.
BY will have same effect on turmeric paper as the milk of magnesia.
CAmmonium sulphate will have same effect on blue litmus paper as the lemon juice.
DNone of these


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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

C

Kilogram is the unit of measuring weight which is measured by a weighing balance.


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

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Subject :NSO    Class : Class 5

Refer to the given Venn diagram and select the incorrect statement regarding X, Y and Z.


A X could be an incurable disease that damages immune system of the infected person.
B Disease Y could be effectively treated by antibiotics.
C Z could be a disease in which blood platelet count of a person goes down significantly.
D Both X and Y could be communicable diseases, of which Y could get cured on its own.


the answer will be 'B' because virus can't be treated by antibiotics.

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
the answer will be 'b' because virus can't be treated by antibiotics.

Ans 3:

Class : Class 5
you are correct abhiraj

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Subject :NSO    Class : Class 5

The given graph shows the changes in level of pollution in an area over a time period.

Which of the following can be inferred from the given graph?

AAt point P a lot of forest land was cleared for human consumption whereas at point Q large scale afforestation was done.
BAt point R a new factory was set up in the area.
CPeople cut down the use of fossil fuels in the interval S - T as compared to its earlier usage.
DIntervals R - S and T - U indicate activities like use of bioinsecticides and biopesticides instead of chemicals in farming, use of public transport instead of private transport, etc.


Ans 1: (Master Answer)

Class : Class 1

D

Use of bio-insecticides and bio-pesticides will bring down the pollution level, and Intervals R – S and T – U show the pollution levels coming down.


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Subject :NSO    Class : Class 8

It is possible to make a meaningful word with the second, the third, the ninth, the tenth, the thirteenth, the fourteenth and the eighteenth letters of the word COUNTERINTELLIGENCE, using each letter only once, except the second letter, which should be used twice, which of the following will be the third letter of that word? If no such word can be formed give 'X' as the answer, and if only two such words can be made give answer 'Y'. And if more than two such words can be formed give answer 'Z'.

A C
B X
C Y
D Z


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Subject :NSO    Class : Class 10

Humans inherit colour of their eyes from their parents. Brown-eyed couple has three blue-eyed children. Which of the following statements gives correct explanation of this situation?
(i) Each parent has an allele for brown eyes and an allele for blue eyes.
(ii) The allele for blue eyes is recessive.
(iii) The probability that their next child will have blue eyes is 0.75.
(iv) The probability that their next child will have brown eyes is 0.5.

A (i) and (ii) only
B (i) and (iii) only
C (ii) and (iv) only
D (iii) and (iv) only


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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
yes

Ans 2:

Class : Class 6
c can also be possible. i dont understand why we pay to answer questions that are not even proofread.

Ans 3:

Class : Class 6
C option can be possible.

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

A


Ans 2:

Class : Class 3

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Subject :NSO    Class : Class 10

Shaheen, a class 10 student studied the speed of the given reaction under different conditions.

In experiment I, she added 1 g of MnO2 (catalyst) to 75 cm3 of 0.4 mol/L H2O2 solution at 30°C In experiment II, she added 1 g of MnO2 to 100 cm3 of 'X' mol/L H2O2 solution at 'T' °(C) She recorded her observations and plotted a graph as shown in the given figure.
The values of X and T in experiment II could be respectively


A 0.30 and 35
B 0.40 and 30
C 0.25 and 30
D 0.30 and 30.


How to find this?

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